CN110443911B

CN110443911B - Electric automobile and battery data uploading method and device

Info

Publication number: CN110443911B
Application number: CN201810417432.0A
Authority: CN
Inventors: 尹韶文; 宋峰; 林培锦
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2021-01-19
Anticipated expiration: 2038-05-04
Also published as: CN110443911A

Abstract

The invention provides an electric automobile and a method and a device for uploading battery data, wherein the method comprises the following steps: collecting battery data in real time; judging whether the current battery data reach a preset key point or not; if the current battery data reaches a preset key point, uploading the acquired battery data to a server according to a preset period; and if the current battery data does not reach the preset key point, further judging whether the difference value between the current battery data and the battery data collected last time is greater than a preset critical point, and uploading the current battery data to the server when the difference value between the current battery data and the battery data collected last time is greater than the preset critical point. The method can greatly improve the accuracy of key data uploading, improve the controllability of basic data uploading, and effectively reduce the cost of flow.

Description

Electric automobile and battery data uploading method and device

Technical Field

The invention relates to the technical field of vehicles, in particular to a battery data uploading method, a battery data uploading device and an electric automobile.

Background

The existing uploading method of basic data of the battery system comprises a fixed-period uploading method and a variable uploading method, and the specific introduction is as follows:

the fixed period uploading method comprises the following steps: according to the cycle time, collecting data and upwards transmitting battery voltage data and temperature data according to a fixed cycle; the method has the advantages that the transmission period can be fixed, the transmission quantity can be controlled, the receiving and processing requirements of a receiving party can not be subjected to index definition, the period time can also be defined according to transmission limitation or processing capacity, the uploading logic is simple and easy to realize, and the defects that if the battery data changes for many times in the fixed period, only the battery data reaching the uploading period can be recorded, the high-precision and high-data analysis cannot be met, and invalid data (data is unchanged, but the period uploading) can be increased when the data is stable;

the change uploading method comprises the following steps: uploading specific data according to the data change and the changed defined range (different requirement definitions), namely only uploading the data; the method has the advantages that the battery change records can be uploaded for many times, the data volume is almost zero when the data is stable, and the transmission flow is reduced; the method has the disadvantages that the difficulty is increased for the analysis of a receiving party when the data is uploaded, the requirement of uploading for multiple times can be generated if the battery data is changed too fast, and the flow is not controlled well.

However, the most important disadvantage of the fixed-period uploading method is that the critical data of the battery data change cannot be accurately uploaded to the receiving system, which causes the analysis system to be unable to analyze the change characteristics of the battery according to the detailed change data; the biggest defects of the variable uploading method are that the uploaded data is scattered and uncontrollable, the uploading flow of the battery data is uncontrollable, and the analysis processing cost of a receiving processor on the data is increased.

Therefore, in the case where the amount of transmission data is sufficient and the performance resources of the receiving server are sufficient, it is preferable to use the variation upload method. However, in some systems (such as a battery energy storage industrial system), the cost is high by adopting a variable uploading method, the economy is poor, and the method is not suitable for practical application; however, by using the regular-period uploading method, the critical variable data cannot be obtained, and the flow is wasted when the battery data is not changed.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, a first objective of the present invention is to provide a method for uploading battery data, which can greatly improve the accuracy of uploading key data, improve the controllability of uploading basic data, and effectively reduce the cost of flow rate.

A second object of the invention is to propose a non-transitory computer-readable storage medium.

A third object of the invention is to propose a computer device.

The fourth purpose of the present invention is to provide an uploading device of battery data.

A fifth object of the present invention is to provide an electric vehicle.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for uploading battery data, including the following steps: acquiring battery data in real time, wherein the battery data comprises battery parameters and/or environmental parameters of a battery; judging whether the current battery data reach a preset key point or not; if the current battery data reaches the preset key point, uploading the acquired battery data to the server according to a preset period; and if the current battery data does not reach the preset key point, further judging whether the difference value between the current battery data and the battery data collected last time is greater than a preset critical point, and uploading the current battery data to a server when the difference value between the current battery data and the battery data collected last time is greater than the preset critical point.

The method for uploading the battery data can acquire the battery data in real time, judge whether the current battery data reaches the preset key point, upload the acquired battery data to the server according to the preset period if the current battery data reaches the preset key point, further judge whether the difference value between the current battery data and the battery data acquired last time is greater than the preset critical point if the current battery data does not reach the preset key point, and upload the current battery data to the server if the difference value between the current battery data and the battery data acquired last time is greater than the preset critical point. Therefore, the accuracy of key data uploading is greatly improved, the controllability of basic data uploading is improved, and the cost of flow is effectively reduced.

In order to achieve the above object, a second aspect of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the above method for uploading battery data.

The non-transitory computer-readable storage medium of the embodiment of the invention realizes the uploading method of the battery data when executing the method, improves the uploading accuracy of the key data, improves the uploading controllability of the basic data, and effectively reduces the cost of the flow.

In order to achieve the above object, a third embodiment of the present invention provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the computer device implements the above method for uploading battery data.

According to the computer equipment provided by the embodiment of the invention, by executing the uploading method of the battery data, the uploading accuracy of the key data is greatly improved, the uploading controllability of the basic data is improved, and the cost of the flow is effectively reduced.

In order to achieve the above object, a fourth aspect of the present invention provides an uploading apparatus of battery data, including: the acquisition module is used for acquiring battery data in real time, wherein the battery data comprises battery parameters and/or environmental parameters of the battery; the first judgment module is used for judging whether the current battery data reaches a preset key point; the second judgment module is used for judging whether the difference value between the current battery data and the battery data acquired last time is larger than a preset critical point or not when the current battery data does not reach the preset critical point; and the transmission module is used for uploading the acquired battery data to the server according to a preset period when the current battery data reaches the preset key point, and uploading the current battery data to the server when the difference value between the current battery data and the battery data acquired last time is greater than the preset critical point.

The battery data uploading device of the embodiment of the invention acquires the battery data in real time through the acquisition module, judges whether the current battery data reaches the preset key point through the first judgment module, judges whether the difference value between the current battery data and the battery data acquired last time is greater than the preset critical point through the second judgment module when the current battery data does not reach the preset key point, uploads the acquired battery data to the server according to the preset period when the current battery data reaches the preset key point through the transmission module, and uploads the current battery data to the server when the difference value between the current battery data and the battery data acquired last time is greater than the preset critical point. Therefore, the accuracy of key data uploading is greatly improved, the controllability of basic data uploading is improved, and the cost of flow is effectively reduced.

In order to achieve the above object, a fifth embodiment of the present invention provides an electric vehicle, which includes the above battery data uploading device.

This electric automobile, through the upload device of battery data of above-mentioned embodiment, can improve the accuracy nature that key data uploaded greatly, improve the controllability that basic data uploaded, effectively reduce the expense cost of flow.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart of a method for uploading battery data according to an embodiment of the present invention;

FIG. 2 is a graphical illustration of an exemplary raw battery data;

FIG. 3 is a graphical illustration of battery data uploaded using the method of the present invention in one example;

FIG. 4 is a graphical illustration of an exemplary battery data uploaded in a 4 second cycle;

FIG. 5 is a graphical illustration of battery data uploaded over an exemplary 2 second period;

FIG. 6 is a graphical illustration of another exemplary raw battery data;

FIG. 7 is a graphical illustration of battery data uploaded using the method of the present invention in another example;

FIG. 8 is a graphical illustration of another exemplary battery data uploaded in a 4 second cycle;

FIG. 9 is a graphical illustration of battery data uploaded over another exemplary 2 second period;

fig. 10 is a schematic block diagram of an uploading device of battery data according to an embodiment of the present invention;

fig. 11 is a schematic block diagram of an uploading device of battery data according to another embodiment of the present invention;

fig. 12 is a block diagram illustrating an uploading apparatus of battery data according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A method of uploading battery data, a non-transitory computer-readable storage medium, a computer device, an apparatus for uploading battery data, and an electric vehicle according to embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic flow chart of a method for uploading battery data according to an embodiment of the present invention.

As shown in fig. 1, the method for uploading battery data includes the following steps:

and S101, collecting battery data in real time.

It can be understood that the battery data needs to be collected before being uploaded, so that the collected battery data can be uploaded as required.

In an embodiment of the invention, the battery data comprises battery parameters and/or environmental parameters in which the battery is located. Alternatively, when the battery is composed of a plurality of unit batteries, the battery data may include one or more of the following physical quantities: the battery temperature, the battery charging current, the battery discharging current, the battery charging power, the battery discharging power, the battery power consumption in unit time, the total voltage of the battery, the environmental humidity of the battery and the voltages of a plurality of single batteries. It should be understood that the above physical quantities, i.e., the battery temperature, the battery charging current, the battery discharging current, the battery charging power, the battery discharging power, the battery power consumption per unit time, the total battery voltage, and the ambient humidity of the battery, are for the whole battery, and the cell voltage is for each cell.

Specifically, when the battery is composed of a plurality of single batteries, a voltage acquisition unit may be provided corresponding to each single battery to acquire the voltage of each single battery in real time; temperature sensors can be arranged at corresponding positions (which can be calibrated according to requirements and can be one or more) of the battery so as to acquire the temperature (which can be an average value if a plurality of temperature sensors are arranged) of the positions where the temperature sensors are positioned in real time; a current detection unit, such as a Hall element, can be arranged in a loop where the battery is positioned so as to collect the charge and discharge current of the battery in real time; a processing unit can be arranged, the total voltage of the battery can be calculated according to the voltages of all the single batteries, the charging and discharging power of the battery can be correspondingly calculated according to the total voltage of the battery and the charging and discharging current of the battery, and the power consumption of the battery in unit time can be calculated according to the discharging power and the discharging time of the battery, wherein the unit time can be set as required, such as 1 hour; a humidity sensor can be arranged on the surface of the battery to acquire the humidity of the working environment where the battery is located in real time.

It should be understood that when the battery is composed of only one unit cell, the unit cell voltage is the total voltage of the battery, and at this time, the battery data may include one or more of the following physical quantities: battery temperature, battery charging current, battery discharging current, battery charging power, battery discharging power, battery power usage per unit time, total battery voltage, and ambient humidity in which the battery is located.

And S102, judging whether the current battery data reach a preset key point.

The preset key points correspond to battery data setting, and the preset key points can include one or more of a single battery charging forbidden voltage Umax, a single battery discharging forbidden voltage Umin, a battery maximum allowable working temperature Tmax, a battery minimum allowable working temperature Tmin, a battery charging current limit value IZ, a battery discharging current limit value If, a battery charging power limit value Pz, a battery discharging power limit value Pf, a battery power consumption limit value Qmax, a battery maximum allowable working humidity Hmax, a battery minimum allowable working humidity Hmin, a battery charging forbidden total voltage Uzmax and a battery discharging forbidden total voltage Uzmin per unit time, wherein Umax is greater than Umin, Tmax is greater than Tmin, Hmax is greater than Hmin, and Uzmax is greater than Uzmin.

In the embodiment of the invention, the preset key points are set to ensure the controllability of the uploading times of the battery data and to upload the battery data under the condition that the battery key data are not lost, so that the uploaded battery data can be used for effectively analyzing the battery performance. Of course, the predetermined key point may be, but is not limited to, the above-mentioned Umax, Umin, Tmax, Tmin, Iz, If, Pz, Pf, Qmax, Hmax, Hmin, Uzmax, Uzmin.

The values of the preset key points can be calibrated according to needs, for example, the values of Iz and If can be 200A, the values of Pz and Pf can be 500W, the value of Qmax can be 100KWH, the value of Hmax is 90%, and the value of Hmin can be 30%.

And S103, if the current battery data reach a preset key point, uploading the acquired battery data to a server according to a preset period.

The preset period is less than or equal to the collection period of the battery data, so that all collected battery data reaching the preset key points can be uploaded to the server, and the change details of the battery data can be completely recorded at the moment, so that the analysis of the battery data is facilitated. It should be appreciated that the predetermined period may also be a minimum period of data transmission, which is determined primarily by the ability to receive data and transmit data (e.g., 1 second).

As one example, when at least one cell voltage reaches a high voltage point (i.e., a charge prohibition voltage Umax) or a low voltage point (i.e., a discharge prohibition voltage Umin), battery data is uploaded at a preset cycle. That is, as long as the voltage of the single battery is collected at this time, the battery data is uploaded to the server to ensure the continuity of the critical data. Therefore, after the key data are uploaded to the server, maintenance personnel can analyze the key data to obtain effective information such as battery characteristics, performance quality assurance and the like; if the short-plate single battery exists, the maintenance personnel can replace the battery according to the requirement, and then the overall performance of the battery is improved.

As another example, when the battery temperature reaches a high temperature (i.e., the maximum allowable operating temperature Tmax) or a low temperature (i.e., the minimum allowable operating temperature Tmin), the battery data is uploaded at a preset cycle. That is, as long as the battery temperature is collected at this time, the battery data is uploaded to the server to ensure the continuity of the critical data. Therefore, maintenance personnel can analyze the key data to obtain effective information.

In this embodiment, when the battery data includes two or more physical quantities at the same time, such as the cell voltage and the battery temperature, and each physical quantity is provided with the preset key point, if any one of the cell voltage and the battery temperature reaches the corresponding preset key point, the collected battery data is uploaded to the server according to the preset period.

And S104, if the current battery data does not reach the preset key point, further judging whether the difference value between the current battery data and the battery data collected last time is larger than a preset critical point, and uploading the current battery data to a server when the difference value between the current battery data and the battery data collected last time is larger than the preset critical point.

It should be understood that if the difference between the current battery data and the battery data collected last time is less than or equal to the preset critical point, the battery data is not uploaded, and the battery data collected later is continuously judged.

The preset critical point is set corresponding to the preset critical point, and the preset critical point may include one or more of a cell charging voltage critical point, a cell discharging voltage critical point, a temperature critical point, a charging current critical point, a discharging current critical point, a charging power critical point, a discharging power critical point, a power consumption critical point, a humidity critical point, a cell charging total voltage critical point, and a cell discharging total voltage critical point.

In the embodiment of the invention, if the current battery data does not reach the preset key point and the difference value between the current battery data and the battery data acquired last time is less than or equal to the preset critical point, the battery data uploading processing is not performed, and the judgment of the next data acquisition is continued.

In the first example of the present invention, when the battery data includes a plurality of cell voltages (here, the specification of each cell voltage is the same), the preset critical point includes a cell charge prohibition voltage Umax and/or a cell discharge prohibition voltage Umin, and the preset critical point corresponds to a cell charge voltage critical point and/or a cell discharge voltage critical point, where Umax > Umin. Of course, if the specifications of the individual batteries are different, the corresponding preset critical point and the preset critical point may be set for each specification of the individual battery.

When the battery is charged, if the voltage of at least one current single battery is greater than or equal to Umax, uploading the acquired battery data to a server according to a preset period; and if at least one current single battery voltage is smaller than Umax, judging whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than a single battery charging voltage critical point, and uploading the currently collected battery data to a server when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery charging voltage critical point.

When the battery discharges, if the voltage of at least one current single battery is less than or equal to Umin, uploading the acquired battery data to a server according to a preset period; and if at least one current single battery voltage is greater than Umin, judging whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is greater than a single battery discharging voltage critical point, and uploading the currently collected battery data to a server when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is greater than the single battery discharging voltage critical point.

In a second example of the present invention, when the battery data includes a battery temperature, the preset critical points include a battery maximum allowable operating temperature Tmax, a battery minimum allowable operating temperature Tmin, and the preset critical points include a temperature critical point, where Tmax > Tmin.

If the current battery temperature is greater than or equal to Tmax or less than or equal to Tmin, uploading the acquired battery data to a server according to a preset period; and if the current battery temperature is greater than Tmin and less than Tmax, judging whether the difference value between the current battery temperature and the battery temperature collected last time is greater than a temperature critical point, and uploading the current collected battery data to a server when the difference value between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point.

In a third example of the present invention, when the battery data includes a battery charging current and/or a battery discharging current, the preset critical point corresponds to a battery charging current limit Iz and/or a battery discharging current limit If, and the preset critical point corresponds to a charging current critical point and/or a discharging current critical point.

When the battery is charged, if the current charging current of the battery is greater than or equal to Iz, uploading the acquired battery data to a server according to a preset period; and if the current battery charging current is smaller than Iz, judging whether the difference value between the current battery charging current and the battery charging current collected last time is larger than a charging current critical point, and uploading the currently collected battery data to a server when the difference value between the current battery charging current and the battery charging current collected last time is larger than the charging current critical point.

When the battery is discharged, If the current battery discharge current is greater than or equal to If, uploading the acquired battery data to a server according to a preset period; and If the current battery discharge current is smaller than If, judging whether the difference value between the current battery discharge current and the battery discharge current collected last time is larger than a discharge current critical point, and uploading the currently collected battery data to a server when the difference value between the current battery discharge current and the battery discharge current collected last time is larger than the discharge current critical point.

In a fourth example of the present invention, when the battery data includes battery charging power and/or battery discharging power, the preset critical point corresponds to a battery charging power limit Pz and/or a battery discharging power limit Pf, and the preset critical point corresponds to a charging power critical point and/or a discharging power critical point.

When the battery is charged, if the current battery charging power is greater than or equal to Pz, uploading the acquired battery data to a server according to a preset period; and if the current battery charging power is smaller than Pz, judging whether the difference value between the current battery charging power and the battery charging power collected last time is larger than a charging power critical point, and uploading the currently collected battery data to a server when the difference value between the current battery charging power and the battery charging power collected last time is larger than the charging power critical point.

When the battery is discharged, if the current battery discharge power is greater than or equal to Pf, uploading the collected battery data to a server according to a preset period; and if the current battery discharge power is smaller than Pf, judging whether the difference value between the current battery discharge power and the battery discharge power collected last time is larger than a discharge power critical point, and uploading the current collected battery data to a server when the difference value between the current battery discharge power and the battery discharge power collected last time is larger than the discharge power critical point.

In a fifth example of the present invention, when the battery data includes a battery power usage per unit time, the preset critical point includes a battery power usage limit Qmax per unit time, and the preset critical point includes a power critical point.

If the power consumption of the battery in the current unit time is greater than or equal to Qmax, uploading the acquired battery data to a server according to a preset period; and if the current battery power consumption in the unit time is less than Qmax, judging whether the difference value between the current battery power consumption in the unit time and the battery power consumption in the unit time acquired last time is greater than a power consumption critical point, and uploading the current acquired battery data to a server when the difference value between the current battery power consumption in the unit time and the battery power consumption in the unit time acquired last time is greater than the power consumption critical point.

In a sixth example of the present invention, when the battery data includes an ambient humidity of the battery, the preset critical points include a maximum allowable operating humidity Hmax of the battery and a minimum allowable operating humidity Hmin of the battery, and the preset critical points include a humidity critical point, where Hmax > Hmin.

If the humidity of the environment where the current battery is located is greater than or equal to Hmax or less than or equal to Hmin, uploading the acquired battery data to a server according to a preset period; and if the current battery environment humidity is greater than Hmin and less than Hmax, judging whether the difference value between the current battery environment humidity and the battery environment humidity acquired last time is greater than a humidity critical point, and uploading the currently acquired battery data to a server when the difference value between the current battery environment humidity and the battery environment humidity acquired last time is greater than the humidity critical point.

In a seventh example of the present invention, when the battery data includes a total battery voltage, the preset critical point includes a total battery charge prohibition voltage Uzmax and/or a total battery discharge prohibition voltage Uzmin, and the preset critical point corresponds to a total battery charge voltage critical point and/or a total battery discharge voltage critical point, where Uzmax > Uzmin.

When the battery is charged, if the total voltage of the current battery is greater than or equal to Uzmax, uploading the acquired battery data to a server according to a preset period; and if the total voltage of the current battery is smaller than Umax, judging whether the difference value between the total voltage of the current battery and the total voltage of the battery collected last time is larger than the critical point of the total voltage of the battery to be charged, and uploading the data of the battery collected at present to a server when the difference value between the total voltage of the current battery and the total voltage of the battery collected last time is larger than the critical point of the total voltage of the battery to be charged.

When the battery discharges, if the total voltage of the current battery is less than or equal to Umin, uploading the acquired battery data to a server according to a preset period; and if the current total battery voltage is greater than Umin, judging whether the difference value between the current total battery voltage and the last acquired total battery voltage is greater than the critical point of the total battery discharging voltage, and uploading the current acquired battery data to a server when the difference value between the current total battery voltage and the last acquired total battery voltage is greater than the critical point of the total battery discharging voltage.

In an eighth example of the present invention, if the battery data includes a cell voltage and a total battery voltage, when a difference between at least one current cell voltage and a corresponding last acquired cell voltage is greater than a cell charging voltage critical point or a cell discharging voltage critical point, it is further determined whether a difference between the current total battery voltage and the last acquired total battery voltage is greater than a preset voltage threshold, and the current battery data is uploaded to the server when the difference between the current total battery voltage and the last acquired total battery voltage is greater than a preset voltage threshold, where the preset voltage threshold is less than the total battery charging voltage critical point and less than the total battery discharging voltage critical point.

For example, the battery is set to be composed of four single batteries a, b, c and d, and the total voltage of the battery is obtained by adding all the single battery voltages. The currently acquired single battery voltages are Ua1, Ub1, Uc1 and Ud1 respectively, the corresponding last acquired single battery voltages are Ua0, Ub0, Uc0 and Ud0, if the value of at least one of | Ua1-Ua0|, | Ub1-Ub0|, | Uc1-Uc0| and | Ud1-Ud0| is greater than a single voltage critical point, whether the value of | Ua1+ Ub1+ Uc1+ Ud1-Ua0-Ub0-Uc0-Ud0| is greater than a preset voltage threshold value is further judged, if yes, the current battery data are uploaded to a server, and if not, the judgment is continued.

In other words, if the total battery voltage changes in the same direction and exceeds the preset voltage threshold, the possibility of error caused by the cell is low, and at this time, when the difference between the current cell voltage and the cell voltage collected last time is greater than the cell voltage critical point, it may be further determined whether the difference between the current cell voltage and the cell voltage collected last time is greater than the preset voltage threshold, so as to upload the current battery data to the server when the difference is greater than the preset voltage threshold. Therefore, the uploading amount of the battery data can be reduced, and the flow cost is saved.

According to some embodiments of the invention, the predetermined critical point may be determined by: acquiring a sampling error value m and an accuracy required value n of battery data; if m is larger than n, determining that the value of the preset critical point is m + a, wherein a is the precision of the preset critical point; and if m is less than or equal to n, determining the value of the preset critical point as n. It should be noted that the required accuracy value n is the accuracy that can be achieved by the required cell data, that is, n is calibrated according to the requirement; the precision a of the predetermined critical point may be the minimum unit of the sampling error value m, for example, if m is 0.002, a is 0.001; if m is 0.0005, a is 0.0001; if m is 0.06, a is 0.01.

Specifically, when the battery is sampled, an error may occur, and a difference value between a sampled value and a true value is a sampling error value. When the sampling error value is larger than the pre-calibrated accuracy required value, the sampling error is larger, the sampling value cannot meet the requirement, and the value of the preset critical point can be set as the sum of the sampling error value and the precision of the preset critical point; when the sampling error value is less than or equal to the accuracy required value calibrated in advance, the sampling error is in an allowable range, and the accuracy required value can be taken as a value of the preset critical point.

As an example, if the cell voltage sampling error value m is 0.005V, the battery data accuracy requirement value n is 0.003V, and m > n, the preset threshold point is set to 0.005+ 0.001V or 0.006V. And if the voltage change value of at least one single battery is equal to or exceeds the preset critical point, uploading the current battery data.

As another example, if the temperature sampling error value m is 1 ℃ and the temperature data accuracy requirement value n is 1 ℃, the value of the preset critical point is set to 1 ℃. And if the temperature change value of the current battery is equal to or exceeds the preset critical point, uploading the current data.

It should be noted that, when the battery data includes the voltage of the single battery and the total voltage of the battery, if the sampling error value m is greater than the accuracy required value n, the value of the preset voltage threshold may be calibrated as the accuracy required value n to meet the requirement of reducing the data change.

In some embodiments of the present invention, it is also possible to detect whether a loop in which the battery is located has a fault in real time, and when the loop in which the battery is located has a fault, upload the previously acquired battery data to the server according to a preset period. The fault of the loop where the battery is located may include one or more of a battery fault (for example, the total voltage of the battery suddenly changes, that is, a difference between the total voltages collected at two adjacent times is greater than a certain value, which is greater than a total voltage critical point of charging and discharging of the battery), a line fault (for example, a short circuit), and an equipment fault (for example, equipment does not work, works abnormally). It should be noted that the fault detection method of the circuit in which the battery is located may be implemented by using a common technique in the art, and details are not described herein.

In an embodiment of the present invention, after the circuit in which the battery is located has a fault, the fault identifier (such as a fault identification code) may be uploaded to the server while uploading the data, so as to analyze and process the corresponding specific fault point. It should be noted that, if the battery data collected twice consecutively after the occurrence of the fault is the same, the battery data is transmitted only once, and then the processing may be performed according to the flow shown in fig. 1. It should be understood that, in this embodiment, if a failure is detected, the data uploading process is directly performed, and if no failure is detected, the process is performed according to the flow shown in fig. 1.

Specifically, when a fault occurs (for example, a battery fault or an external fault), battery data acquired in real time after the fault is uploaded according to a preset period, and then after the battery data are uploaded to the server, a maintenance person can perform auxiliary analysis on a loop where the battery is located through the battery data uploaded to the server to obtain a reason of the fault, and the battery data uploaded to the server can also help the maintenance person to evaluate subsequent risks (for example, when an electric leakage fault occurs, whether the battery voltage is rapidly pulled down, whether the battery life is affected after the battery voltage is pulled down, and the like).

In an embodiment of the present invention, an event burst point (e.g., a time when a contactor or a switch is disconnected or connected) may be further set as a preset key point, and when an emergency occurs, the acquired battery data is uploaded according to a preset period, that is, the battery data when the emergency occurs is uploaded to a server for storage, so that a maintenance person optimizes a program through the stored battery data at a later stage, and the system operates better (e.g., the battery temperature can be raised suddenly according to power, a better power limit algorithm is designed, etc.). It should be noted that, if the battery data collected twice consecutively after the time burst is the same, the battery data is transmitted only once, and then the processing may be performed according to the flow shown in fig. 1.

The method for uploading battery data according to the embodiment of the present invention is described in detail below by using two specific examples.

Example one:

fig. 2 to 5 are graphs of original battery data (i.e. battery data uploaded by the variable uploading method), battery data uploaded by the method of the present invention, battery data uploaded in 4 seconds of the cycle, and battery data uploaded in 2 seconds of the cycle, respectively, during a single battery charging process, and a charging voltage does not reach a charging prohibition voltage of 3.5V.

As can be seen from fig. 2 to 5, the number of the original battery data of the single battery is 200, and the details of the change are clear; the number of the battery data uploaded by the method is 75, and the change details are clear; the number of the battery data uploaded in a 4-second period is 50, and the change details are fuzzy; the number of the battery data uploaded in a 2-second period is 100, and the details of the change are clear. The concrete can be shown in the following table 1:

TABLE 1

	Raw data	The method of the invention	Cycle time 4 seconds	Period of 2 seconds
					Amount of data	200	75	50	100
Details of the variations	Clear and clear	Is clearer	Comparing blur	Is clearer

As can be seen from table 1 and fig. 2 to 5, compared to the original battery data, the method of the present invention only needs to upload a smaller amount of battery data (75/200) to obtain a clearer change detail of the battery data, and the clarity is not inferior to that of the battery data uploaded at the cycle of 2 seconds.

Example two:

fig. 6 to 9 are graphs of original battery data (i.e., battery data uploaded by the variable uploading method), battery data uploaded by the method of the present invention, battery data uploaded in 4 seconds of the cycle, and battery data uploaded in 2 seconds of the cycle, respectively, during a single battery charging process, and a charging voltage reaches a charging prohibition voltage of 3.5V. The results shown in Table 2 were obtained by analyzing FIGS. 6 to 9.

TABLE 2

	Raw data	Method of the invention	Cycle time 4 seconds	Period of 2 seconds
					Amount of data	200	118	50	100
Details of the variations	Clear and clear	Is clearer	Comparing blur	Is clearer
					High-pressure point data	Clear and clear	Clear and clear	Comparing blur	Is clearer

As can be seen from table 2 and fig. 6 to 9, compared with the original battery data, the battery data uploaded by the method of the present invention has relatively small data volume, clear change detail table, and the original data is restored to 100% at a high-voltage point, i.e., a critical data area, thereby ensuring the reliability of uploading the critical data.

By comparing the two groups of analog data, the uploading method of the invention not only can meet the accuracy requirement of uploading the battery data, but also can accurately upload the key data points when the key data points appear. That is, compared with the battery data uploading algorithm in the related art, the uploading method of the present invention can not only reduce the cost of the flow, but also obtain accurate battery data.

In summary, according to the method for uploading battery data provided by the embodiment of the invention, the accuracy of uploading key data in the battery data can be improved, the controllability of uploading basic data is improved, and the cost of flow is effectively reduced.

In addition, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the program, when executed by a processor, implements the above-mentioned method for uploading battery data.

According to the non-transitory computer-readable storage medium provided by the embodiment of the invention, by executing the program corresponding to the uploading method of the battery data stored on the non-transitory computer-readable storage medium, the uploading accuracy of the key data in the battery data can be improved, the uploading controllability of the basic data is improved, and the cost of the flow is effectively reduced.

In addition, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method for uploading battery data is implemented.

According to the computer device provided by the embodiment of the invention, the processor executes the program corresponding to the uploading method of the battery data, so that the uploading accuracy of key data in the battery data can be improved, the uploading controllability of basic data is improved, and the cost of flow is effectively reduced.

In order to implement the above embodiment, the present invention further provides a device for uploading battery data.

Fig. 10 is a schematic structural diagram of an uploading device of battery data according to an embodiment of the present invention.

As shown in fig. 10, the battery data uploading apparatus includes: the device comprises an acquisition module 100, a first judgment module 200, a second judgment module 300 and a transmission module 400.

The acquisition module 100 is configured to acquire battery data in real time, where the battery data includes battery parameters and/or environmental parameters of the battery. The first determining module 200 is configured to determine whether the current battery data reaches a predetermined key point. The second determining module 300 is configured to determine whether a difference between the current battery data and the battery data collected last time is greater than a preset critical point when the current battery data does not reach the preset critical point. The transmission module 400 is configured to upload the acquired battery data to the server according to a preset period when the current battery data reaches a preset critical point, and upload the current battery data to the server when a difference between the current battery data and the battery data acquired last time is greater than a preset critical point. And the preset period is less than or equal to the acquisition period of the battery data.

According to some embodiments of the present invention, when the battery is composed of a plurality of unit batteries, the battery data includes one or more of the following physical quantities: the battery temperature, the battery charging current, the battery discharging current, the battery charging power, the battery discharging power, the battery power consumption in unit time, the total voltage of the battery, the environmental humidity of the battery and the voltages of a plurality of single batteries.

Specifically, in the first example, when the battery data includes a plurality of cell voltages, the preset critical point includes a cell charge prohibition voltage Umax and/or a cell discharge prohibition voltage Umin, and the preset critical point includes a cell charge voltage critical point and/or a cell discharge voltage critical point, where Umax > Umin.

When the battery is charged, if the voltage of at least one current single battery is greater than or equal to Umax, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if at least one current cell voltage is less than Umax, the second determination module 300 determines whether a difference between the current cell voltage and the corresponding last acquired cell voltage is greater than a cell charging voltage critical point, and when the difference between the current cell voltage and the corresponding last acquired cell voltage is greater than the cell charging voltage critical point, the transmission module 400 uploads the currently acquired battery data to the server.

When the battery is discharged, if the voltage of at least one current single battery is less than or equal to Umin, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if at least one current cell voltage is greater than Umin, the second determination module 300 determines whether the difference between the current cell voltage and the corresponding last-collected cell voltage is greater than a cell discharge voltage critical point, and when the difference between the current cell voltage and the corresponding last-collected cell voltage is greater than the cell discharge voltage critical point, the transmission module 400 uploads the currently-collected battery data to the server.

In a second example, when the battery data includes a battery temperature, the preset critical points include a battery maximum allowable operating temperature Tmax, a battery minimum allowable operating temperature Tmin, and the preset critical points include a temperature critical point, where Tmax > Tmin.

If the current battery temperature is greater than or equal to Tmax or less than or equal to Tmin, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current battery temperature is greater than Tmin and less than Tmax, the second determining module 300 determines whether a difference between the current battery temperature and the battery temperature collected last time is greater than a temperature critical point, and when the difference between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point, the transmission module 400 uploads the current collected battery data to the server.

In a third example, when the battery data includes a battery charging current and/or a battery discharging current, the preset critical point correspondence includes a battery charging current limit Iz and/or a battery discharging current limit If, and the preset critical point correspondence includes a charging current critical point and/or a discharging current critical point.

When the battery is charged, if the current charging current of the battery is greater than or equal to Iz, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current battery charging current is less than Iz, the second determination module 300 determines whether the difference between the current battery charging current and the battery charging current collected last time is greater than the charging current critical point, and when the difference between the current battery charging current and the battery charging current collected last time is greater than the charging current critical point, the transmission module 400 uploads the currently collected battery data to the server.

When the battery is discharged, If the current battery discharge current is greater than or equal to If, the transmission module 400 uploads the collected battery data to the server according to a preset period; if the current battery discharge current is less than If, the second determination module 300 determines whether a difference between the current battery discharge current and the battery discharge current collected last time is greater than a discharge current critical point, and when the difference between the current battery discharge current and the battery discharge current collected last time is greater than the discharge current critical point, the transmission module 400 uploads the currently collected battery data to the server.

In a fourth example, when the battery data includes a battery charging power and/or a battery discharging power, the preset critical point corresponds to a battery charging power limit Pz and/or a battery discharging power limit Pf, and the preset critical point corresponds to a charging power critical point and/or a discharging power critical point.

When the battery is charged, if the current battery charging power is greater than or equal to Pz, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current battery charging power is less than Pz, the second determination module 300 determines whether the difference between the current battery charging power and the battery charging power collected last time is greater than the charging power critical point, and when the difference between the current battery charging power and the battery charging power collected last time is greater than the charging power critical point, the transmission device 400 uploads the currently collected battery data to the server.

When the battery is discharged, if the current battery discharge power is greater than or equal to Pf, the transmission module 400 uploads the collected battery data to the server according to a preset period; if the current battery discharge power is less than Pf, the second determination module 300 determines whether a difference between the current battery discharge power and the battery discharge power collected last time is greater than a discharge power critical point, and when the difference between the current battery discharge power and the battery discharge power collected last time is greater than the discharge power critical point, the transmission module 400 uploads the currently collected battery data to the server.

In a fifth example, when the battery data includes battery power usage per unit time, the preset critical point includes a battery power usage limit Qmax per unit time, and the preset critical point includes a power critical point.

If the power consumption of the battery in the current unit time is greater than or equal to Qmax, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current battery power consumption in the unit time is less than Qmax, the second determining module 300 determines whether the difference between the current battery power consumption in the unit time and the battery power consumption in the unit time acquired last time is greater than a power consumption critical point, and when the difference between the current battery power consumption in the unit time and the battery power consumption in the unit time acquired last time is greater than the power consumption critical point, the transmission module 400 uploads the current acquired battery data to the server.

In a sixth example, when the battery data includes the ambient humidity of the battery, the preset critical points include a maximum allowable operating humidity Hmax of the battery and a minimum allowable operating humidity Hmin of the battery, and the preset critical points include a humidity critical point, where Hmax > Hmin.

If the humidity of the environment where the current battery is located is greater than or equal to Hmax or less than or equal to Hmin, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current environmental humidity of the battery is greater than Hmin and less than Hmax, the second determining module 300 determines whether the difference between the current environmental humidity of the battery and the environmental humidity of the battery collected last time is greater than a humidity critical point, and when the difference between the current environmental humidity of the battery and the environmental humidity of the battery collected last time is greater than the humidity critical point, the transmission module 400 uploads the current collected battery data to the server.

In a seventh example, when the battery data includes a total battery voltage, the preset critical point includes a total battery charge inhibiting voltage Uzmax and/or a total battery discharge inhibiting voltage Uzmin, and the preset critical point corresponds to a total battery charge voltage critical point and/or a total battery discharge voltage critical point, where Uzmax > Uzmin.

When the battery is charged, if the total voltage of the current battery is greater than or equal to Uzmax, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the total voltage of the current battery is less than Umax, the second determination module 300 determines whether the difference between the total voltage of the current battery and the total voltage of the battery collected last time is greater than the critical point of the total voltage of the battery to be charged, and when the difference between the total voltage of the current battery and the total voltage of the battery collected last time is greater than the critical point of the total voltage of the battery to be charged, the transmission module 400 uploads the currently collected battery data to the server;

when the battery is discharged, if the total voltage of the current battery is less than or equal to Umin, the transmission module 400 uploads the acquired battery data to the server according to a preset period; if the current total battery voltage is greater than Umin, the second determination module 300 determines whether the difference between the current total battery voltage and the last collected total battery voltage is greater than the total battery discharge voltage critical point, and when the difference between the current total battery voltage and the last collected total battery voltage is greater than the total battery discharge voltage critical point, the transmission module 400 uploads the current collected battery data to the server.

In an eighth example, as shown in fig. 11, if the battery data includes a cell voltage and a total battery voltage, the uploading apparatus further includes a third determination module 500. The third determining module 500 is configured to determine whether a difference between a current total battery voltage and a last acquired total battery voltage is greater than a preset voltage threshold when a difference between at least one current cell voltage and a corresponding last acquired cell voltage is greater than a cell charging voltage critical point or a cell discharging voltage critical point, where the preset voltage threshold is smaller than the cell charging total voltage critical point and smaller than the cell discharging total voltage critical point.

The transmission module 400 uploads the current battery data to the server when the difference between the current total battery voltage and the last collected total battery voltage is greater than the preset voltage threshold.

According to some embodiments of the invention, the predetermined critical point is determined by: acquiring a sampling error value m and an accuracy required value n of battery data; if m is larger than n, determining that the value of the preset critical point is m + a, wherein a is the precision of the preset critical point; and if m is less than or equal to n, determining the value of the preset critical point as n.

In an embodiment of the present invention, as shown in fig. 12, the uploading apparatus further includes a detection module 600, and the detection module 600 is configured to detect whether a circuit in which the battery is located has a fault in real time. When a loop where the battery is located breaks down, the transmission module 400 uploads the acquired battery data to the server according to a preset period.

The fault of the circuit in which the battery is located comprises one or more of battery fault, line block and equipment fault.

It should be noted that the foregoing explanation of the embodiment of the method for uploading battery data is also applicable to the battery data uploading apparatus of this embodiment, and details are not repeated here.

According to the uploading device of the battery data provided by the embodiment of the invention, the uploading accuracy of the key data can be greatly improved, the uploading controllability of the basic data is improved, and the cost of the flow is effectively reduced.

In addition, the invention also provides an electric automobile which comprises the battery data uploading device.

According to the electric automobile provided by the embodiment of the invention, by adopting the battery data uploading device, the accuracy of uploading key data can be greatly improved, the controllability of uploading basic data is improved, and the cost of flow is effectively reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A method for uploading battery data is characterized by comprising the following steps:

acquiring battery data in real time, wherein the battery data comprises battery parameters and/or environmental parameters of a battery;

judging whether the current battery data reach a preset key point or not;

if the current battery data reaches the preset key point, uploading the acquired battery data to a server according to a preset period;

if the current battery data does not reach the preset key point, further judging whether the difference value between the current battery data and the battery data collected last time is larger than a preset critical point, and uploading the current battery data to a server when the difference value between the current battery data and the battery data collected last time is larger than the preset critical point,

and the preset period is less than or equal to the acquisition period of the battery data.

2. The method for uploading battery data according to claim 1, wherein when the battery is composed of a plurality of unit batteries, the battery data includes one or more of the following physical quantities:

the battery temperature, the battery charging current, the battery discharging current, the battery charging power, the battery discharging power, the battery power consumption in unit time, the total voltage of the battery, the environmental humidity of the battery and the voltages of a plurality of single batteries.

3. The method for uploading battery data according to claim 2, wherein when the battery data includes a plurality of cell voltages, the preset critical point includes a cell charging prohibition voltage Umax and/or a cell discharging prohibition voltage Umin, and the preset critical point includes a cell charging voltage critical point and/or a cell discharging voltage critical point, where Umax > Umin; wherein the content of the first and second substances,

when the battery is charged, if the voltage of at least one current single battery is greater than or equal to Umax, uploading the acquired battery data to the server according to the preset period; if at least one current single battery voltage is smaller than Umax, judging whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery charging voltage critical point, and uploading the currently collected battery data to the server when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery charging voltage critical point;

when the battery discharges, if the voltage of at least one current single battery is less than or equal to Umin, uploading the acquired battery data to the server according to the preset period; and if at least one current single battery voltage is greater than Umin, judging whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is greater than the single battery discharging voltage critical point, and uploading the currently collected battery data to the server when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is greater than the single battery discharging voltage critical point.

4. The method for uploading battery data according to claim 2, wherein when the battery data includes a battery temperature, the preset critical points include a maximum allowable battery operating temperature Tmax and a minimum allowable battery operating temperature Tmin, and the preset critical points include a temperature critical point, where Tmax > Tmin;

if the current battery temperature is greater than or equal to Tmax or less than or equal to Tmin, uploading the acquired battery data to the server according to the preset period; and if the current battery temperature is greater than Tmin and less than Tmax, judging whether the difference value between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point, and uploading the current collected battery data to the server when the difference value between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point.

5. The method for uploading battery data according to claim 2, wherein when the battery data includes a battery charging current and/or a battery discharging current, the preset critical point corresponds to a battery charging current limit Iz and/or a battery discharging current limit If, and the preset critical point corresponds to a charging current critical point and/or a discharging current critical point; wherein the content of the first and second substances,

when the battery is charged, if the current charging current of the battery is greater than or equal to Iz, uploading the acquired battery data to the server according to the preset period; if the current battery charging current is smaller than Iz, judging whether the difference value between the current battery charging current and the battery charging current collected last time is larger than the charging current critical point, and uploading the currently collected battery data to the server when the difference value between the current battery charging current and the battery charging current collected last time is larger than the charging current critical point;

when the battery is discharged, If the current battery discharge current is greater than or equal to If, uploading the acquired battery data to the server according to the preset period; if the current battery discharging current is smaller than If, judging whether the difference value between the current battery discharging current and the battery discharging current collected last time is larger than the discharging current critical point, and uploading the current collected battery data to the server when the difference value between the current battery discharging current and the battery discharging current collected last time is larger than the discharging current critical point.

6. The method for uploading battery data according to claim 2, wherein when the battery data includes battery charging power and/or battery discharging power, the preset critical point corresponds to a battery charging power limit Pz and/or a battery discharging power limit Pf, and the preset critical point corresponds to a charging power critical point and/or a discharging power critical point; wherein the content of the first and second substances,

when the battery is charged, if the current battery charging power is greater than or equal to Pz, uploading the acquired battery data to the server according to the preset period; if the current battery charging power is smaller than Pz, judging whether the difference value between the current battery charging power and the battery charging power collected last time is larger than the charging power critical point, and uploading the current collected battery data to the server when the difference value between the current battery charging power and the battery charging power collected last time is larger than the charging power critical point;

when the battery is discharged, if the current battery discharge power is larger than or equal to Pf, uploading the collected battery data to the server according to the preset period; and if the current battery discharge power is smaller than Pf, judging whether the difference value between the current battery discharge power and the battery discharge power collected last time is larger than the discharge power critical point, and uploading the current collected battery data to the server when the difference value between the current battery discharge power and the battery discharge power collected last time is larger than the discharge power critical point.

7. The method for uploading battery data according to claim 2, wherein when the battery data includes a battery power consumption per unit time, the preset key point includes a battery power consumption limit Qmax per unit time, and the preset threshold point includes a power critical point;

if the power consumption of the battery in the current unit time is greater than or equal to Qmax, uploading the acquired battery data to the server according to the preset period; and if the current battery power consumption in the unit time is less than Qmax, judging whether the difference value between the current battery power consumption in the unit time and the battery power consumption in the unit time collected last time is greater than the power consumption critical point, and uploading the current collected battery data to the server when the difference value between the current battery power consumption in the unit time and the battery power consumption in the unit time collected last time is greater than the power consumption critical point.

8. The method for uploading battery data according to claim 2, wherein when the battery data includes an ambient humidity of the battery, the preset critical points include a maximum allowable operating humidity Hmax of the battery and a minimum allowable operating humidity Hmin of the battery, and the preset critical points include a critical humidity point, where Hmax > Hmin;

if the humidity of the environment where the current battery is located is greater than or equal to Hmax or less than or equal to Hmin, uploading the acquired battery data to the server according to the preset period; and if the current battery environment humidity is greater than Hmin and less than Hmax, judging whether the difference value between the current battery environment humidity and the battery environment humidity acquired last time is greater than the humidity critical point, and uploading the currently acquired battery data to the server when the difference value between the current battery environment humidity and the battery environment humidity acquired last time is greater than the humidity critical point.

9. The method for uploading battery data according to claim 2, wherein when the battery data includes a total battery voltage, the preset critical point includes a total battery charging prohibition voltage Uzmax and/or a total battery discharging prohibition voltage Uzmin, and the preset critical point corresponds to a total battery charging voltage critical point and/or a total battery discharging voltage critical point, where Uzmax > Uzmin;

when the battery is charged, if the total voltage of the current battery is greater than or equal to Uzmax, uploading the acquired battery data to the server according to the preset period; if the total voltage of the current battery is smaller than Umax, judging whether the difference value between the total voltage of the current battery and the total voltage of the battery acquired last time is larger than the critical point of the total voltage of the battery charging, and uploading the data of the battery acquired currently to the server when the difference value between the total voltage of the current battery and the total voltage of the battery acquired last time is larger than the critical point of the total voltage of the battery charging;

when the battery is discharged, if the total voltage of the current battery is less than or equal to Umin, uploading the acquired battery data to the server according to the preset period; and if the current total battery voltage is greater than Umin, judging whether the difference value between the current total battery voltage and the last collected total battery voltage is greater than the total battery discharging voltage critical point, and uploading the current collected battery data to the server when the difference value between the current total battery voltage and the last collected total battery voltage is greater than the total battery discharging voltage critical point.

10. The method for uploading battery data according to claim 2, wherein if the battery data includes a cell voltage and a total battery voltage, when a difference between at least one current cell voltage and a corresponding last collected cell voltage is greater than a cell charging voltage critical point or a cell discharging voltage critical point, it is further determined whether a difference between the current total battery voltage and the last collected total battery voltage is greater than a preset voltage threshold, and the current battery data is uploaded to the server when the difference between the current total battery voltage and the last collected total battery voltage is greater than the preset voltage threshold, wherein the preset voltage threshold is less than the total battery charging voltage critical point and less than the total battery discharging voltage critical point.

11. The method for uploading battery data according to claim 1, wherein the predetermined critical point is determined by:

acquiring a sampling error value m and an accuracy required value n of battery data;

if m is larger than n, determining that the value of the preset critical point is m + a, wherein a is the precision of the preset critical point;

and if m is less than or equal to n, determining that the value of the preset critical point is n.

12. The method for uploading battery data according to claim 1, further comprising:

detecting whether a loop where the battery is located breaks down or not in real time;

and if the loop where the battery is located has a fault, uploading the acquired battery data to the server according to the preset period.

13. The method for uploading battery data as claimed in claim 12, wherein the fault of the circuit in which the battery is located includes one or more of a battery fault, a line block and an equipment fault.

14. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the method for uploading battery data according to any one of claims 1 to 13.

15. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements the method for uploading battery data according to any one of claims 1 to 13.

16. An uploading device of battery data, characterized by comprising:

the acquisition module is used for acquiring battery data in real time, wherein the battery data comprises battery parameters and/or environmental parameters of the battery;

the first judgment module is used for judging whether the current battery data reaches a preset key point;

the second judgment module is used for judging whether the difference value between the current battery data and the battery data acquired last time is larger than a preset critical point or not when the current battery data does not reach the preset critical point;

a transmission module, configured to upload the acquired battery data to a server according to a preset period when the current battery data reaches the preset key point, and upload the current battery data to the server when a difference between the current battery data and the battery data acquired last time is greater than the preset critical point,

17. The apparatus for uploading battery data according to claim 16, wherein when the battery is composed of a plurality of unit batteries, the battery data includes one or more of the following physical quantities:

18. The device for uploading battery data according to claim 17, wherein when the battery data includes a plurality of cell voltages, the preset critical point includes a cell charge prohibition voltage Umax and/or a cell discharge prohibition voltage Umin, and the preset critical point corresponds to a cell charge voltage critical point and/or a cell discharge voltage critical point, where Umax > Umin; wherein the content of the first and second substances,

when the battery is charged, if the voltage of at least one current single battery is greater than or equal to Umax, the transmission module uploads the acquired battery data to the server according to the preset period; if at least one current single battery voltage is smaller than Umax, the second judging module judges whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery charging voltage critical point, and when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery charging voltage critical point, the transmission module uploads the currently collected battery data to the server;

when the battery discharges, if the voltage of the current single battery is less than or equal to Umin, the transmission module uploads the acquired battery data to the server according to the preset period; if the current single battery voltage is larger than Umin, the second judgment module judges whether the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery discharging voltage critical point, and when the difference value between the current single battery voltage and the corresponding single battery voltage collected last time is larger than the single battery discharging voltage critical point, the transmission module uploads the currently collected battery data to the server.

19. The apparatus for uploading battery data according to claim 17, wherein when the battery data includes a battery temperature, the preset critical points include a battery maximum allowable operating temperature Tmax and a battery minimum allowable operating temperature Tmin, and the preset critical points include a temperature critical point, where Tmax > Tmin;

if the current battery temperature is greater than or equal to Tmax or less than or equal to Tmin, the transmission module uploads the acquired battery data to the server according to the preset period; if the current battery temperature is greater than Tmin and less than Tmax, the second judging module judges whether a difference value between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point, and when the difference value between the current battery temperature and the battery temperature collected last time is greater than the temperature critical point, the transmission module uploads the current collected battery data to the server.

20. The device for uploading battery data according to claim 17, wherein when the battery data includes a battery charging current and/or a battery discharging current, the preset critical point corresponds to a battery charging current limit Iz and/or a battery discharging current limit If, and the preset critical point corresponds to a charging current critical point and/or a discharging current critical point; wherein the content of the first and second substances,

when the battery is charged, if the current charging current of the battery is greater than or equal to Iz, the transmission module uploads the acquired battery data to the server according to the preset period; if the current battery charging current is smaller than Iz, the second judgment module judges whether the difference value between the current battery charging current and the battery charging current collected last time is larger than the charging current critical point, and when the difference value between the current battery charging current and the battery charging current collected last time is larger than the charging current critical point, the transmission module uploads the currently collected battery data to the server;

when the battery is discharged, If the current battery discharge current is greater than or equal to If, the transmission module uploads the collected battery data to the server according to the preset period; if the current battery discharging current is smaller than If, the second judging module judges whether the difference value between the current battery discharging current and the battery discharging current collected last time is larger than the discharging current critical point, and when the difference value between the current battery discharging current and the battery discharging current collected last time is larger than the discharging current critical point, the transmission module uploads the current collected battery data to the server.

21. The device for uploading battery data according to claim 17, wherein when the battery data includes battery charging power and/or battery discharging power, the preset critical point corresponds to a battery charging power limit Pz and/or a battery discharging power limit Pf, and the preset critical point corresponds to a charging power critical point and/or a discharging power critical point; wherein the content of the first and second substances,

when the battery is charged, if the current battery charging power is greater than or equal to Pz, the transmission module uploads the acquired battery data to the server according to the preset period; if the current battery charging power is smaller than Pz, the second judgment module judges whether the difference value between the current battery charging power and the battery charging power collected last time is larger than the charging power critical point, and when the difference value between the current battery charging power and the battery charging power collected last time is larger than the charging power critical point, the transmission device uploads the currently collected battery data to the server;

when the battery is discharged, if the current battery discharge power is greater than or equal to Pf, the transmission module uploads the collected battery data to the server according to the preset period; if the current battery discharge power is smaller than Pf, the second judgment module judges whether the difference value between the current battery discharge power and the battery discharge power collected last time is larger than the discharge power critical point, and when the difference value between the current battery discharge power and the battery discharge power collected last time is larger than the discharge power critical point, the transmission module uploads the current collected battery data to the server.

22. The apparatus for uploading battery data according to claim 17, wherein when the battery data includes a battery power consumption per unit time, the preset critical point includes a battery power consumption limit Qmax per unit time, and the preset critical point includes a power critical point;

if the power consumption of the battery in the current unit time is greater than or equal to Qmax, the transmission module uploads the acquired battery data to the server according to the preset period; if battery power consumption is less than Qmax in the current unit time, the second judgment module judges whether the difference between the current battery power consumption in the unit time and the battery power consumption in the unit time collected last time is greater than the power consumption critical point, and when the difference between the current battery power consumption in the unit time and the battery power consumption in the unit time collected last time is greater than the power consumption critical point, the transmission module uploads the current collected battery data to the server.

23. The device for uploading battery data according to claim 17, wherein when the battery data includes an ambient humidity of the battery, the preset critical points include a maximum allowable operating humidity Hmax of the battery and a minimum allowable operating humidity Hmin of the battery, and the preset critical points include a critical humidity point, where Hmax > Hmin;

if the humidity of the environment where the current battery is located is greater than or equal to Hmax or less than or equal to Hmin, the transmission module uploads the collected battery data to the server according to the preset period; if the current battery environment humidity is greater than Hmin and less than Hmax, the second judgment module judges whether the difference between the current battery environment humidity and the battery environment humidity acquired last time is greater than the humidity critical point, and when the difference between the current battery environment humidity and the battery environment humidity acquired last time is greater than the humidity critical point, the transmission module uploads the currently acquired battery data to the server.

24. The device for uploading battery data according to claim 17, wherein when the battery data includes a total battery voltage, the preset critical point includes a total battery charge prohibition voltage Uzmax and/or a total battery discharge prohibition voltage Uzmin, and the preset critical point corresponds to a total battery charge voltage critical point and/or a total battery discharge voltage critical point, where Uzmax > Uzmin;

when the battery is charged, if the total voltage of the current battery is greater than or equal to Uzmax, the transmission module uploads the acquired battery data to the server according to the preset period; if the current total battery voltage is less than Umax, the second judgment module judges whether the difference value between the current total battery voltage and the total battery voltage collected last time is greater than the total battery charging voltage critical point, and when the difference value between the current total battery voltage and the total battery voltage collected last time is greater than the total battery charging voltage critical point, the transmission module uploads the current collected battery data to the server;

when the battery discharges, if the total voltage of the current battery is less than or equal to Umin, the transmission module uploads the acquired battery data to the server according to the preset period; if the current total battery voltage is greater than Umin, the second judgment module judges whether the difference value between the current total battery voltage and the total battery voltage collected last time is greater than the total battery discharging voltage critical point, and when the difference value between the current total battery voltage and the total battery voltage collected last time is greater than the total battery discharging voltage critical point, the transmission module uploads the current collected battery data to the server.

25. The apparatus for uploading battery data according to claim 17, wherein if the battery data includes a cell voltage and a total battery voltage, the apparatus for uploading further includes:

a third determining module, configured to determine whether a difference between a current total battery voltage and a last acquired total battery voltage is greater than a preset voltage threshold when a difference between at least one current cell voltage and a corresponding last acquired cell voltage is greater than a cell charging voltage critical point or a cell discharging voltage critical point, where the preset voltage threshold is smaller than the cell charging total voltage critical point and smaller than the cell discharging total voltage critical point;

and the transmission module uploads the current battery data to the server when the difference value between the current total battery voltage and the total battery voltage collected last time is greater than the preset voltage threshold value.

26. The apparatus for uploading battery data according to claim 16, wherein the predetermined critical point is determined by:

27. The apparatus for uploading battery data according to claim 16, further comprising:

the detection module is used for detecting whether a loop where the battery is located breaks down or not in real time;

and the transmission module is also used for uploading the acquired battery data to the server according to the preset period when the loop where the battery is located has a fault.

28. The apparatus for uploading battery data as claimed in claim 27, wherein the fault of the circuit in which the battery is located includes one or more of a battery fault, a line block and an equipment fault.

29. An electric vehicle characterized by comprising the battery data upload device according to any one of claims 16 to 28.